Beverage dispenser

Abstract

The utility model discloses a beverage dispenser which comprises a brewing device, a beverage dispenser body and a beverage dispenser body. The water supply pipeline is connected to the brewing device and used for supplying water to the brewing cavity; the output pipeline is connected to the brewing device and used for outputting liquid from the brewing cavity; the drainage cavity is provided with an input port, an output port and an air vent; the input port is selectively communicated with the output pipeline, and the output port is connected to a discharge port of the beverage dispenser; the power device is connected to the ventilation opening; the power device operably enables first pressure to be generated in the drainage cavity; under the action of the first pressure, the input port is communicated with the output pipeline, so that liquid in the output pipeline enters the drainage cavity and then is discharged to the discharge port through the output port. By arranging the power device and the drainage cavity, liquid in the output pipeline can be discharged through the drainage cavity instead of the power device, the output pipeline can be rapidly and effectively emptied, and the situation that the service life or performance of the power device is damaged due to the fact that the liquid flows through the power device is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of beverage preparation, in particular to a beverage machine. Background Art

[0002] In existing beverage machines, users often use them to make a variety of beverages such as coffee and tea. This type of machine usually has a brewer, a water supply system, and a beverage output system, so that users can quickly make a variety of beverages with different flavors through simple operations. In these machines, the brewer introduces water through the water supply pipe, and fully contacts the hot or cold water with materials such as coffee powder or tea leaves to complete the production of the beverage. However, after brewing a cup of beverage, a small amount of liquid often remains in the beverage output system. Especially when making coffee, the residual coffee liquid can easily affect the taste of the next cup of beverage. The accumulation of this residual liquid not only affects the hygiene of the beverage machine, but also leads to a decline in the quality of the beverage. Therefore, how to quickly and thoroughly empty the residual liquid in the beverage output system after each production has become one of the important issues to improve the user experience of the beverage machine.

[0003] Existing beverage machines usually use a simple gravity discharge design to solve this problem, or remove residual liquid by adding a manual cleaning procedure. However, these methods have many limitations. Gravity discharge is inefficient, especially for coffee or milk drinks with high liquid viscosity. Incomplete discharge will cause residue to accumulate in the pipes, making it difficult to clean thoroughly. In addition, the manual cleaning steps are cumbersome, inconvenient for users' daily use, and cannot guarantee that the residual liquid is completely emptied. After long-term use, residual beverages can easily cause bacteria to grow inside the beverage machine, affecting the hygiene and taste of the beverage. Utility Model Content

[0004] The purpose of the utility model is to provide a hygienic and reliable beverage machine.

[0005] In order to achieve the above-mentioned purpose of the utility model, the utility model provides a beverage machine, comprising:

[0006] A brewer having a brewing chamber for brewing a beverage;

[0007] a water supply pipeline, connected to the brewer, for supplying water to the brewing chamber;

[0008] an output pipeline, connected to the brewer, for outputting the liquid from the brewing chamber;

[0009] a drainage chamber, the drainage chamber having an input port, an output port, and a vent; the input port is selectively connectable to the output pipeline, and the output port is connected to the discharge port of the beverage machine;

[0010] A power device is connected to the vent; the power device is operable to generate a first pressure in the drainage cavity; under the action of the first pressure, the input port is connected to the output pipeline, so that the liquid in the output pipeline enters the drainage cavity and is then discharged to the discharge port through the output port.

[0011] Compared to the prior art, the present invention offers the following advantages: By integrating the power unit with the drainage chamber, a first pressure is introduced to quickly and efficiently drain residual liquid from the brewer and output pipeline into the drainage chamber, which is then discharged through the drainage chamber's output port, thereby emptying the brewer and output pipeline. This maintains cleanliness of the pipeline and reduces the impact of residual liquid on the next brewing cycle, thereby improving the sanitation of the beverage machine and ensuring consistent beverage taste and consistent volume for each subsequent cup. Furthermore, as residual liquid is discharged through the drainage chamber to the discharge port, it does not enter the power unit, thus preventing any impact on the lifespan and performance of the power unit from residual liquid.

[0012] As a further improvement of one embodiment of the present invention, the drainage chamber is constructed to extend from the input port to the output port along the direction of gravity, and the vent is arranged between the input port and the output port of the drainage chamber; the drainage chamber is connected to the discharge port under the action of the fluid pressure in the drainage chamber.

[0013] As a further improvement of one embodiment of the present invention, the output port of the drainage chamber is selectively connected to the discharge port, and the power device is operable to generate a second pressure in the drainage chamber. The drainage chamber and the discharge port are connected under the action of the second pressure, and the liquid in the drainage chamber is discharged to the discharge port through the output port; wherein, the second pressure is greater than the first pressure.

[0014] As a further improvement of an embodiment of the present invention, the input port is provided with a first one-way valve, which allows one-way communication from the output pipeline to the drainage cavity;

[0015] The output port is provided with a second one-way valve, which allows one-way communication from the drainage cavity to the discharge port;

[0016] Either the first one-way valve or the second one-way valve is selectively opened under the action of the power device.

[0017] As a further improvement of one embodiment of the present utility model, the power device has a pumping mode and a draining mode. In the pumping mode, the first one-way valve is opened, the second one-way valve is closed, and the liquid in the output pipeline enters the drainage chamber; in the draining mode, the first one-way valve is closed, the second one-way valve is opened, and the liquid in the drainage chamber is discharged to the discharge port.

[0018] As a further improvement of one embodiment of the present invention, it also includes a liquid collecting container, the drainage chamber is defined by the liquid collecting container, a pipe connector is provided on the output pipeline, the pipe connector includes at least a first outlet and a second outlet, the first outlet is connected to the beverage outlet, and the input port of the drainage chamber is connected to the second outlet.

[0019] As a further improvement of an embodiment of the present invention, the beverage machine further includes a controller, and the controller is communicatively connected to the power device;

[0020] When the controller receives an emptying signal, the power device can generate the first pressure in the drainage chamber to connect the output pipeline with the drainage chamber, and then generate the second pressure in the drainage chamber to connect the drainage chamber with the discharge port.

[0021] As a further improvement of an embodiment of the present invention, the power device is configured as a peristaltic pump, the peristaltic pump comprising a pump tube for conveying gas, one end of the pump tube being connected to the vent, and the other end of the pump tube being connected to the external environment;

[0022] The peristaltic pump moves in a first direction, and the gas in the drainage chamber is discharged to the external environment through the pump tube to generate the first pressure in the drainage chamber; the peristaltic pump moves in a second direction, and the gas in the external environment enters the drainage chamber through the pump tube to generate the second pressure in the drainage chamber.

[0023] As a further improvement of one embodiment of the present invention, along the direction of gravity, the input port is located above the output port, the vent is arranged adjacent to the input port, the highest liquid level of the liquid in the output pipeline after entering the drainage cavity is lower than the vent, and the direction of airflow from the vent is at an angle to the direction of gravity.

[0024] As a further improvement of one embodiment of the present invention, the present invention further includes a detection unit, which is used to detect parameters of the liquid entering the drainage cavity from the output pipeline. The detection unit is set in one of the following ways:

[0025] The drainage cavity includes a contraction area adjacent to the output port, and the detection portion extends into the contraction area;

[0026] The detection portion is provided on a flow path downstream of the output port. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of a beverage machine according to one embodiment of the present invention.

[0028] Figure 2 yes Figure 1 Schematic diagram of the liquid collection container of the beverage machine in FIG.

[0029] Figure 3 yes Figure 1 A schematic diagram of another structural form of the beverage machine in FIG.

[0030] Figure 4 yes Figure 3 Schematic diagram of the liquid collection container of the beverage machine.

[0031] Figure 5 yes Figure 1 A schematic diagram of another structural form of the beverage machine in FIG.

[0032] Figure 6 yes Figure 5 Schematic diagram of the liquid collection container of the beverage machine.

[0033] Figure 7 yes Figure 6 Schematic diagram of another structural form of the intermediate liquid collecting container. DETAILED DESCRIPTION

[0034] The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0035] The beverage machine 100 in the specific embodiment of the present invention is described by taking a coffee machine as an example. Figures 1 to 2 As shown, the beverage machine 100 includes: a brewer 20, a water supply pipe 31 and an output pipe 41, wherein the brewer 20 is used to brew beverages and is provided with a brewing chamber, which is used to brew beverages; the water supply pipe 31 is connected to the brewer 20 for supplying water to the brewing chamber; the output pipe 41 is connected to the brewer 20 for outputting liquid from the brewing chamber.

[0036] The beverage machine 100 also includes a water supply source 32, a water pump 33, and a heater 34. Water from the water supply source 32 is supplied to the heater 34 via the water pump 33, and the heated water is then delivered to the water supply line 31. The beverage outlet 43 of the beverage machine 100 is used to discharge liquid from the brewing chamber. Specifically, the brewed beverage can be delivered to a cup through the beverage outlet 43. A first control valve 35 is connected downstream of the water pump 33. The first control valve 35 selectively connects to the heater 34 or the water supply line 31 to provide hot or cold water to the brewer 20. A second control valve 36 is connected to the water supply line 31. The second control valve 36 selectively connects to the brewer 20 or the beverage outlet 43. Through the second control valve 36, the water supply line 31 selectively supplies hot or cold water to the brewer 20 for brewing a beverage, or supplies hot or cold water to the beverage outlet 43 for direct delivery to a user's cup.

[0037] Here, cold water can be understood as water that has not been heated by the heater 34 , such as water at room temperature in the water supply source 32 .

[0038] The beverage machine 100 also includes a drainage chamber 51 and a power unit 60. The drainage chamber 51 has an input port 511, an output port 512, and a vent 513. The input port 511 can selectively communicate with the output line 41, while the output port 512 is connected to the discharge port 45 of the beverage machine 100. The power unit 60 is connected to the vent 513 of the drainage chamber 51 and is operable to generate a first pressure within the drainage chamber 51. Under the action of the first pressure, the input port 511 communicates with the output line 41, allowing liquid in the output line 41 to enter the drainage chamber 51 and then be discharged to the discharge port 45 through the output port 512 of the drainage chamber 51.

[0039] The power unit 60 cooperates with the drainage chamber 51 to introduce a first pressure, quickly and efficiently draining the remaining liquid in the brewer 20 and output line 41 into the drainage chamber 51. The liquid is then discharged through the output port 512 of the drainage chamber 51, thereby emptying the brewer 20 and output line 41. This maintains the cleanliness of the lines and reduces the impact of residual liquid on the next beverage brewing. This improves the sanitation of the beverage machine 100 and ensures a consistent beverage taste and consistent volume from cup to cup. Furthermore, during the process of residual liquid being discharged through the drainage chamber 51 to the discharge port 45, it does not enter the power unit 60, thereby preventing the residual liquid from affecting the lifespan and performance of the power unit 60, such as preventing clogging and shortening the lifespan of the power unit 60, and reducing the number of parts requiring cleaning. In some embodiments, the drainage chamber 51 is constructed to extend from the input port 511 to the output port 512 along the direction of gravity, and the vent 513 is arranged between the input port 511 and the output port 512 of the drainage chamber 51; the drainage chamber 51 is connected to the discharge port 45 under the action of the fluid pressure in the drainage chamber 51.

[0040] When liquid flows from the output line 41 into the drainage chamber 51, gravity can be used to drain any remaining liquid, allowing the liquid to flow more smoothly within the drainage chamber 51 without incurring additional costs. Under the influence of the fluid pressure generated within the drainage chamber 51, the flow of fluid within the drainage chamber 51 improves drainage efficiency, ensuring that the liquid can quickly flow out to the discharge port 45. The placement of the vent 513 between the input port 511 and the output port 512 of the drainage chamber 51 allows for better control of the air pressure within the drainage chamber 51, preventing liquid backflow.

[0041] Optionally, the output port 512 of the drainage chamber 51 is selectively connected to the discharge port 45, and the power device 60 is operable to generate a second pressure in the drainage chamber 51. The drainage chamber 51 and the discharge port 45 are connected under the action of the second pressure, and the liquid in the drainage chamber 51 is discharged to the discharge port 45 through the output port 512; wherein the second pressure is greater than the first pressure.

[0042] Under the action of the second pressure, the liquid in the drainage chamber 51 can be discharged more quickly and completely through the output port 512 to the discharge port 45. This significantly improves the drainage efficiency, especially in the case of high-viscosity liquids or long discharge paths, effectively draining any residual liquid. The first pressure can be negative, and the second pressure can be positive, relative to standard atmospheric pressure, making it easier to control and ensuring more reliable liquid introduction and discharge from the drainage chamber 51.

[0043] Reference Figure 2 A first one-way valve 53 is provided at the input port 511, and the first one-way valve 53 allows one-way communication from the output pipeline 41 to the drainage chamber 51; a second one-way valve 55 is provided at the output port 512, and the second one-way valve 55 allows one-way communication from the drainage chamber 51 to the discharge port 45; the first one-way valve 53 and the second one-way valve 55 are selectively opened under the action of the power device 60.

[0044] For example, when the power device 60 generates a first pressure in the drainage chamber 51, the first one-way valve 53 is opened and the second one-way valve 55 is closed, and the liquid in the output pipeline 41 can smoothly enter the drainage chamber 51 through the first one-way valve 53. Since the second one-way valve 55 is closed, the liquid entering the drainage chamber 51 remains in the drainage chamber 51; and when the power device 60 generates a second pressure in the drainage chamber 51, the first one-way valve 53 is closed and the second one-way valve 55 is opened. Since the second one-way valve 55 is opened, the liquid in the drainage chamber 51 can be discharged to the discharge port 45 through the output port 512 of the drainage chamber 51.

[0045] The first and second one-way valves 53 and 55 are provided to ensure one-way communication of the liquid during its flow in different directions, effectively preventing liquid backflow. This helps the power unit 60 maintain the directionality of the flow within the drainage chamber 51 in different operating modes, thereby improving the stability and reliability of the system. The first and second one-way valves 53 and 55 can be configured as duckbill valves, which have a simple structure, are easy to install, and are relatively low in cost.

[0046] Reference Figure 2 The beverage machine 100 includes a liquid collection container 50, a drainage chamber 51 defined by the liquid collection container 50, and a first connector 56 and a second connector 58. The first one-way valve 53 is secured to the input port 511 via the first connector 56, and the second one-way valve 55 is secured to the output port 512 via the second connector 58. The provision of the first connector 56 and the second connector 58 facilitates the connection of upstream and downstream pipelines of the liquid collection container 50 and the securing of the first and second one-way valves 53 and 55, resulting in a simple structure and easy installation.

[0047] The power unit 60 has a pumping mode and a draining mode. In the pumping mode, the first one-way valve 53 is open and the second one-way valve 55 is closed, allowing the liquid in the output pipeline 41 to enter the drainage chamber 51. In the draining mode, the first one-way valve 53 is closed and the second one-way valve 55 is open, allowing the liquid in the drainage chamber 51 to be drained to the discharge port 45. The power unit 60 controls the opening and closing of the first and second one-way valves 53, 55 in different modes, ensuring that the liquid can smoothly enter the drainage chamber 51 during pumping and completely drain out of the drainage chamber 51 during draining. This ensures automated drainage and improves drainage efficiency.

[0048] Whether the brewer 20 discharges residual beverage liquid after making a beverage, or discharges residual cleaning liquid after cleaning the brewer 20, the power device 60 can be used to pump and drain the liquid, so that the residual liquid in the pipeline is discharged through the drainage cavity 51 without passing through the power device 60.

[0049] In some embodiments, as Figure 1 As shown, the output pipeline 41 is provided with a pipe connector 42, which includes at least a first outlet 421 and a second outlet 422. The first outlet 421 is connected to the beverage outlet 43, and the input port 511 of the drainage chamber 51 is connected to the second outlet 422. The liquid collection container 50 is configured as a branch of the output pipeline 41 via the pipe connector 42. This allows for flexible switching between beverage output and residual liquid discharge without affecting normal beverage output, optimizes the liquid collection and discharge process, and improves the compactness and maintenance convenience of the beverage machine 100's pipeline configuration.

[0050] In some specific embodiments, the pipe connector 42 can be a tee pipe, which includes an inlet, a first outlet 421 and a second outlet 422; the inlet of the tee pipe can be connected to the brewing chamber, the first outlet 421 of the tee pipe is connected to the beverage outlet 43, and the second outlet 422 of the tee pipe can be optionally connected to the drainage chamber 51.

[0051] The beverage machine 100 also includes a controller 70, which is communicatively connected to the power device 60; when the controller 70 receives an emptying signal, the power device 60 can generate a first pressure in the drainage chamber 51 to connect the output pipe 41 and the drainage chamber 51, and then generate a second pressure in the drainage chamber 51 to connect the drainage chamber 51 and the discharge port 45.

[0052] Through the communication connection between the controller 70 and the power device 60, the pressure in the drainage cavity 51 can be automatically adjusted when the emptying signal is received, thereby realizing automatic control.

[0053] Specifically, the time for generating the first pressure in the drainage chamber 51 can be set based on factors affecting the amount of liquid discharged, such as the pipeline volume of the output pipeline 41, and factors such as the power strength of the power device 60, such as the first working time of the power device 60. After the first working time, the second pressure is controlled to be generated in the drainage chamber 51.

[0054] Specifically, the power device 60 is configured as a peristaltic pump, which includes a pump tube 61 for conveying gas. One end of the pump tube 61 is connected to the vent 513, and the other end of the pump tube 61 is connected to the external environment. When the peristaltic pump moves in a first direction, the gas in the drainage chamber 51 is discharged to the external environment through the pump tube 61, thereby generating a first pressure in the drainage chamber 51. When the peristaltic pump moves in a second direction, the gas in the external environment enters the drainage chamber 51 through the pump tube 61, thereby generating a second pressure in the drainage chamber 51. The movement in the first direction may be forward, and the movement in the second direction may be reverse.

[0055] A peristaltic pump is provided to control the flow of gas into and out of the drainage chamber 51 , so that the air pressure in the drainage chamber 51 can be precisely adjusted, ensuring that the liquid flows along the expected path, and more effectively preventing the accumulation of residues.

[0056] In some embodiments, along the direction of gravity, the input port 511 is located above the output port 512, and the vent 513 is arranged adjacent to the input port 511. The highest liquid level of the liquid in the output pipeline 41 after entering the drainage cavity 51 is lower than the vent 513, and the direction of the air flow from the vent 513 is at an angle to the direction of gravity.

[0057] The input port 511 and the output port 512 are arranged relative to each other in the direction of gravity. Combined with the arrangement of the airflow direction of the vent 513, the combined effects of gravity and airflow can be effectively utilized to improve the efficiency of liquid discharge and prevent liquid from being retained in the drainage cavity 51. In some specific embodiments, the airflow direction of the vent 513 is horizontal, perpendicular to the direction of gravity.

[0058] The highest liquid level of the liquid in the output pipeline 41 after entering the drainage cavity 51 is lower than the vent 513 , so as to ensure that the liquid is not forced to enter the power device 60 through the vent 513 because the liquid level is higher than the vent 513 .

[0059] Among them, the input port 511 is offset relative to the center of the liquid collecting container 50, and the output port 512 is set at the center of the liquid collecting container 50. The input direction of the input port 511 is inclined toward the side away from the vent 513. When the liquid is input, it can be avoided from splashing onto the vent 513, and at the same time can be guided to the container wall of the liquid collecting container 50, so as not to directly impact the output port 512, ensuring that the liquid extraction is more reliable.

[0060] Reference Figure 3 and Figure 4 In some embodiments, the beverage machine 100 further includes a detection unit 57, which is used to detect the parameters of the liquid entering the drainage chamber 51 from the output pipe 41. The drainage chamber 51 includes a contraction area 515 adjacent to the output port 512, and the detection unit 57 is configured to extend into the contraction area 515. The setting of the contraction area 515 facilitates the collection of liquid entering the drainage chamber 51, so that even when the amount of liquid is small, the liquid parameters can be conveniently and accurately detected, thereby reducing the consumption of beverage making materials. The setting of the detection unit 57 is capable of detecting liquid parameters, such as temperature, TDS (total dissolved solids), etc. The detection unit 57 is communicatively connected to the controller 70. By detecting these liquid parameters, the operation of the beverage machine 100 can be adjusted by the controller 70, thereby ensuring the consistency of the quality of each beverage and meeting the user's personalized taste requirements.

[0061] In this embodiment, the detection unit 57 is constructed as a TDS sensor, and the TDS sensor is set near the output port 512 to facilitate the detection unit 57 to detect the parameters of the lower layer of liquid after the liquid is stratified. For example, the liquid in the drainage chamber 51 is a coffee beverage. Accordingly, after the coffee beverage is allowed to stand and stratify, the oil is located in the upper layer and the coffee liquid is located in the lower layer. The result obtained by the detection unit 57 on the coffee liquid in the lower layer is more accurate and reliable.

[0062] When the brewing liquid needs to be tested, the beverage prepared by the brewer 20 can be first drawn into the drainage chamber 51 by the power device 60 , and then the liquid in the drainage chamber 51 can be discharged to the discharge port 45 by the power device 60 after testing.

[0063] Reference Figure 5 and Figure 6 In some embodiments, the configuration of the drainage chamber 51 is the same as in the above-described embodiment, except that the beverage dispenser 100 further includes a detection unit 57a, which is used to detect parameters of the liquid entering the drainage chamber 51 from the output pipe 41. The detection unit 57a is disposed on the flow path downstream of the output port 512. The detection unit 57a is disposed outside the drainage chamber 51 and may be a VST deflector. After the oil and coffee liquid of the coffee beverage are separated, the output port 512 opens, allowing the coffee liquid located below to flow out in a fixed amount to the detection unit 57a, ensuring the reliability of the detected parameters.

[0064] The input port 511 and the output port 512 are arranged opposite to each other along the center of the liquid collecting container 50, which facilitates the manufacture of the liquid collecting container 50. Figure 7 The detection portion 57 may also be a TDS sensor, which is configured to extend into the drainage cavity 51. The TDS sensor is disposed near the output port 512 to ensure that the detected parameters are more accurate and reliable.

[0065] The beverage machine is not limited to a coffee machine, and may also be other beverage brewing devices, such as a tea machine or other beverage brewing devices.

[0066] The above-described beverage dispenser solves the problems of residual liquid remaining after beverage production, which is difficult to completely drain and complex to clean. It also addresses the lifespan and performance issues of the power unit 61 used to drain the output pipe 41. By utilizing a combination of negative and positive pressure control, the beverage dispenser automatically extracts and discharges liquid, ensuring the hygienic state of the dispenser through automated discharge functions. The detection unit also allows for adjustment of beverage flavors to meet the taste requirements of different users.

[0067] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0068] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the scope of protection of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the scope of protection of the utility model.

Claims

1. A beverage machine, characterized in that: include: A brewer having a brewing chamber for brewing a beverage; a water supply pipeline, connected to the brewer, for supplying water to the brewing chamber; an output pipeline, connected to the brewer, for outputting the liquid from the brewing chamber; a drainage cavity, the drainage cavity having an input port, an output port, and a vent; The input port is selectively communicable with the output pipeline, and the output port is connected to the discharge port of the beverage machine; A power device is connected to the vent; the power device is operable to generate a first pressure in the drainage cavity; under the action of the first pressure, the input port is connected to the output pipeline, so that the liquid in the output pipeline enters the drainage cavity and is then discharged to the discharge port through the output port.

2. The beverage machine according to claim 1, characterized in that The drainage cavity is constructed to extend from the input port to the output port along the gravity direction, and the vent is provided between the input port and the output port of the drainage cavity; the drainage cavity is connected to the discharge port under the action of the fluid pressure in the drainage cavity.

3. The beverage machine according to claim 1, characterized in that The output port of the drainage chamber is selectively connected to the discharge port, and the power device is operable to generate a second pressure in the drainage chamber. The drainage chamber and the discharge port are connected under the action of the second pressure, and the liquid in the drainage chamber is discharged to the discharge port through the output port; wherein the second pressure is greater than the first pressure.

4. The beverage machine according to claim 2 or 3, characterized in that: The input port is provided with a first one-way valve, which allows one-way communication from the output pipeline to the drainage cavity; The output port is provided with a second one-way valve, which allows one-way communication from the drainage cavity to the discharge port; Either the first one-way valve or the second one-way valve is selectively opened under the action of the power device.

5. The beverage machine according to claim 4, characterized in that The power device has a pumping mode and a draining mode. In the pumping mode, the first one-way valve is opened, the second one-way valve is closed, and the liquid in the output pipeline enters the drainage chamber; in the draining mode, the first one-way valve is closed, the second one-way valve is opened, and the liquid in the drainage chamber is drained to the discharge port.

6. The beverage machine according to any one of claims 1 to 3, characterized in that: It also includes a liquid collection container, the drainage chamber is defined by the liquid collection container, a pipe connector is provided on the output pipeline, the pipe connector includes at least a first outlet and a second outlet, the first outlet is connected to the beverage outlet, and the input port of the drainage chamber is connected to the second outlet.

7. The beverage machine according to claim 3, characterized in that The beverage machine further includes a controller, the controller being in communication with the power device; When the controller receives an emptying signal, the power device can generate the first pressure in the drainage chamber to connect the output pipeline with the drainage chamber, and then generate the second pressure in the drainage chamber to connect the drainage chamber with the discharge port.

8. The beverage machine according to claim 7, characterized in that The power device is configured as a peristaltic pump, the peristaltic pump comprising a pump tube for conveying gas, one end of the pump tube being connected to the vent, and the other end of the pump tube being connected to the external environment; The peristaltic pump moves in a first direction, and the gas in the drainage cavity is discharged to the external environment through the pump tube, so as to generate the first pressure in the drainage cavity; The peristaltic pump moves along the second direction, and the gas in the external environment enters the drainage cavity through the pump tube to generate the second pressure in the drainage cavity.

9. The beverage machine according to any one of claims 1 to 3, characterized in that: Along the direction of gravity, the input port is located above the output port, and the vent is arranged adjacent to the input port. The highest liquid level of the liquid in the output pipeline after entering the drainage cavity is lower than the vent, and the flow direction of the airflow from the vent is at an angle to the direction of gravity.

10. The beverage machine according to any one of claims 1 to 3, characterized in that: The device further includes a detection unit for detecting parameters of the liquid entering the drainage cavity from the output pipeline. The detection unit is configured in one of the following ways: The drainage cavity includes a contraction area adjacent to the output port, and the detection portion extends into the contraction area; The detection portion is provided on a flow path downstream of the output port.

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